In vitro antioxidant, anticoagulant and antimicrobial activity and in inhibition of cancer cell proliferation by xylan extracted from corn cobs

Xylan is one of most abundant polymer after cellulose. However, its potential has yet to be completely recognized. Corn cobs contain a considerable reservoir of xylan. The aim of this work was to study some of the biological activities of xylan obtained from corn cobs after alkaline extraction enhan...

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Veröffentlicht in:International journal of molecular sciences 2012-01, Vol.13 (1), p.409-426
Hauptverfasser: Melo-Silveira, Raniere Fagundes, Fidelis, Gabriel Pereira, Costa, Mariana Santana Santos Pereira, Telles, Cinthia Beatrice Silva, Dantas-Santos, Nednaldo, de Oliveira Elias, Susana, Ribeiro, Vanessa Bley, Barth, Afonso Luis, Macedo, Alexandre José, Leite, Edda Lisboa, Rocha, Hugo Alexandre Oliveira
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container_title International journal of molecular sciences
container_volume 13
creator Melo-Silveira, Raniere Fagundes
Fidelis, Gabriel Pereira
Costa, Mariana Santana Santos Pereira
Telles, Cinthia Beatrice Silva
Dantas-Santos, Nednaldo
de Oliveira Elias, Susana
Ribeiro, Vanessa Bley
Barth, Afonso Luis
Macedo, Alexandre José
Leite, Edda Lisboa
Rocha, Hugo Alexandre Oliveira
description Xylan is one of most abundant polymer after cellulose. However, its potential has yet to be completely recognized. Corn cobs contain a considerable reservoir of xylan. The aim of this work was to study some of the biological activities of xylan obtained from corn cobs after alkaline extraction enhanced by ultrasonication. Physical chemistry and infrared analyses showed 130 kDa heteroxylan containing mainly xylose:arabinose: galactose:glucose (5.0:1.5:2.0:1.2). Xylan obtained exhibited total antioxidant activity corresponding to 48.5 mg of ascorbic acid equivalent/g of xylan. Furthermore, xylan displayed high ferric chelating activity (70%) at 2 mg/mL. Xylan also showed anticoagulant activity in aPTT test. In antimicrobial assay, the polysaccharide significantly inhibited bacterial growth of Klebsiella pneumoniae. In a test with normal and tumor human cells, after 72 h, only HeLa tumor cell proliferation was inhibited (p < 0.05) in a dose-dependent manner by xylan, reaching saturation at around 2 mg/mL, whereas 3T3 normal cell proliferation was not affected. The results suggest that it has potential clinical applications as antioxidant, anticoagulant, antimicrobial and antiproliferative compounds.
doi_str_mv 10.3390/ijms13010409
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source MDPI - Multidisciplinary Digital Publishing Institute; MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central
subjects 3T3 Cells
Animals
Anti-Infective Agents - chemistry
Anti-Infective Agents - pharmacology
Anticoagulants
Anticoagulants - chemistry
Anticoagulants - metabolism
Antimicrobial activity
Antimicrobial agents
Antioxidants
Antioxidants - chemistry
Antioxidants - metabolism
Arabinose
Ascorbic acid
Biochemistry
Biofilms - drug effects
Biopolymers
Cancer
Carbohydrates
Cardiovascular disease
Cell growth
Cell Line, Tumor
Cell proliferation
Cell Proliferation - drug effects
Cellulose
Electronic mail systems
Food
Galactose
Glucose
HeLa Cells
Humans
Klebsiella pneumoniae
Klebsiella pneumoniae - drug effects
Klebsiella pneumoniae - physiology
Mice
Partial Thromboplastin Time
Pharmacy
Plant Extracts - chemistry
Plant Extracts - pharmacology
Polysaccharides
Staphylococcus epidermidis - drug effects
Staphylococcus epidermidis - physiology
Superoxides - chemistry
Therapeutic applications
Thromboplastin - chemistry
Thromboplastin - metabolism
Toxicity
Tumor cells
Tumors
Xylan
Xylans - chemistry
Xylans - pharmacology
Xylose
Zea mays - chemistry
Zea mays - metabolism
title In vitro antioxidant, anticoagulant and antimicrobial activity and in inhibition of cancer cell proliferation by xylan extracted from corn cobs
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